电动汽车用永磁同步电动机混沌振动的控制

Chaos Control in Permanent Magnet Synchronous Motor

建立非均匀气隙永磁同步电动机系统的数学模型,用系统的时间历程图、相轨迹图、庞加莱映射图、李雅普诺夫指数和功率谱图揭示混沌振动。为消除永磁同步电动机系统中的混沌振动,在此系统上施加一个非线性反馈控制器,通过选取适当的控制参数,可将原来永磁同步电动机系统中的混沌振动控制到稳定的周期运动。数值仿真结果表明该控制方法的有效性与可行性。

The permanent magnet synchronous motor system with non-smooth air-gap model is established. Chaotic vibration in the system is revealed with the time history diagram, phase trajectory map, Poincar6 map, Lyapunov exponents and power spectra of the system. In order to eliminate the chaotic vibration in permanent magnet synchronous motor system, a nonlinear feedback controller is applied on this system by selecting the appropriate control parameters to control the chaotic vibration in the original permanent magnet synchronous motor system to a stable periodic motion. The results of numerical simulation show that the control method is effective and feasible.